The Auto-Ordnance 1927A-1 Deluxe is a semi-automatic .45 ACP rifle styled after the Thompson submachine gun. It has a 16.5-inch finned barrel, 20+1 round capacity, blued finish, and a detachable walnut stock. Weight is 13 lbs. Sights are a blade front with open adjustable rear. Safety is a manual thumb type. 
 

Key Specifications 

• Caliber: .45 ACP 
• Capacity: 20+1 rounds 
• Barrel Length: 16.5 inches 
• Weight: 13 lbs 
• Manufacturer: Auto-Ordnance 
• Model: 1927A-1 Deluxe 
• Finish: Blued with walnut accents 
• Safety Type: Manual Thumb Safety 
   
  The finned barrel is period-correct to the Thompson design and does contribute to cooling during extended shooting sessions. The adjustable rear sight allows for elevation correction at different ranges. The detachable walnut stock comes off for a more compact configuration and adds the classic silhouette when attached. 
   
  This rifle's identity is inseparable from the Thompson's history. It's not a lightweight, tactically optimized platform -- at 13 lbs it's heavy by modern standards -- but that's not what it's for. Owners tend to buy it specifically because of what it represents.

Discussion around the 1927A-1 Deluxe typically starts with the historical connection to the Thompson. Owners appreciate the period-correct styling and the walnut stock quality, and many treat it primarily as a collector piece or range curiosity.

Reliability and accuracy at the ranges appropriate to .45 ACP draw positive feedback. Recoil is described as manageable for the caliber, and the shooting experience is generally reported as enjoyable for recreational use.

Weight is the practical limitation most often raised. At 13 lbs it's heavy to carry and can be tiring during extended range sessions. The weight also makes it unsuitable for the tactical or self-defense roles that some buyers might consider.

Price relative to similar options generates debate. Many owners see the historical appeal and build quality as justifying the cost; others feel it competes poorly with modern platforms on a features-per-dollar basis. The consensus is that it's worth the price if you want what it is -- a Thompson-style semi-auto in .45 ACP -- and not the right choice if you're shopping primarily for practicality.